Answer:
![\text {](https://img.qammunity.org/2020/formulas/physics/middle-school/ft4e15i8isocgh1vbq45z2acgif6hrd27z.png)
Step-by-step explanation:
Density of an object is defined as the mass occupied per unit volume. “Density” is represented by “ρ”. Mathematically,
where, “m" mass of an object and "v" is volume of an object.
Given that,
Dimensions of the block are 20 cm, 5 cm and 10 cm.
![\text { Volume of the block is } l * b * h](https://img.qammunity.org/2020/formulas/physics/middle-school/79eahks5zt07xex2vaa3qakggpl08gnmtw.png)
![\text { Volume of the block is } 20 * 5 * 10](https://img.qammunity.org/2020/formulas/physics/middle-school/7badh5opq6y43o0wcd2gynnzqzlxxbmqyd.png)
![\text { Volume of the block is } 1000 \mathrm{cm}^(3) \text { . }](https://img.qammunity.org/2020/formulas/physics/middle-school/tfq48rmknwwjrl2wrnqvgr0y7i0wlnipm2.png)
Mass of the block is 2700 g.
Substitute the given values in
to find density of a block.
![\rho=(2700)/(1000)](https://img.qammunity.org/2020/formulas/physics/middle-school/u4zmkejfn6gl0k3vtjc2o4zhnkwq2sc6gm.png)
![\rho=2.7 \mathrm{g} / \mathrm{cm}^(3)](https://img.qammunity.org/2020/formulas/physics/middle-school/i8bo2q65i147gkq98gsv3u7nththdjxuk7.png)
![\text {](https://img.qammunity.org/2020/formulas/physics/middle-school/w9osvdr7cdv73v3ojcoquxop5qc2gqkmy4.png)